Excavating implement door



J. P. MURTAUGH EXCAVATING IMPLEMENT DOOR 2 sheets-sheet 1 FiledJan. 5,1934 Feb., 5, i935.

Feb. 5, i935. J, P. MURTAUGH EXCAVATING IMPLEMENT DOOR Filed Jan. 5,1954 2 Sheets-Sheet 2 Patented Feb. 5, 1935 UNITED' .S'Ifl'lllv PATENTOFFICE EXCAVATING IMPLEMENT DOOR Joseph P; Murtaugh, Chicago Heights,Ill., as signor to American Manganese Steel Company, Glneago Heights,Ill., a corporation or Meine Aliplieation January 5,. 1934, Serio! NoE705,313 22 claims. (01.2149145) The invention relates to excavatingimple- Figure l is a topplan view of the bottom pormentsi suoli as neweractuated shovels, clippers tion oi avknown type .of excavating .dinnerhavor the like, provided with doors through which ing. the door of thepresent invention applied. material gathered by the implement may bedisthereto.

charged et voluntarily determined points; and .Figure 2 is enelevational view of the outside of particularly doors ertieulated withsuon implethe doofinents in a manner to permit opening and closingFigures 3 and 4, are longitudinal sections teken,

by ninging eotion, respectively, on the lines Sirf-3i' and 4dr-A2: of

in the development of clippers oi larger capacity, Figure 2.- l some owhich are cgpetble of gothering, convey- Figure 51S a Side elevation ofthe rear portion l0 ins and discharging as mush as iifteen or more ofthe implement and its door, as viewed from cubic yards of materiel atta, single operation of the left 0f FlgilieS l and 2.; and

the implement, the hllgirlg doors are required to Fglli'eS 6 and 7 .aretransverse Sections taken, withstand not only large stresses resultingfrom leslleotlvelmon the lines Gemor and 7r-.-7:c ofV A loads directlyimposed thereon, but severe shocks Figure 2 i 15 due to impact againstmaterials being handled and -l represents e Portion of the body of eneXoo door designs heretofore resorted to in meeting vating implement,for instance, a dinner, oonlihee Conditions, have involved undesliaiblylarge Strueted with a. known arrangement of bearings weight of metal andompiieetion of. structure. 2 for the usuel .dinner stiel: (not shown)and beerlt .is en object of the present invention to proings 3 forpintles 4 (dotted lines in Figure l) zo vide a hinging door forexoavating implements through means .oi which to articulate with thewhich will be veri' light tempered with loads .and dinner the hinges 5of a door 6, physieal forces which it is required to stand, and Door 6,aooording to the present inventiomis at the saine time be veryrigid andsturdy in conf designed as an integral casting composed of webstruction, es well as. relatively cheap to produite portions andintegral beam framing; the web 25 by foundry methods. portions beingsubdivided according to the disrlhe invention proceeds upon the.principle of position of the beam members which constitute conslllletlrlg the door of integrally related, web-f the framing, forinstance, the web portions 7, 8, like, well-forming portions togetherwith fram.- 9, 1.0, 11 and l12, with or without reinforcing maringbeams, the framing besms being primarily gina-1 portions 1-3, 1.4, 15and lo and marginal so related in the structure as the grins of hingesbrackets 17 if desl'ed- The framing comprises end terminating in endsconstructed for articulate hollow beams i8 which are positioned as theing the door with the body Q the implement; there arms of hingesandtransmit the load o f the door, being else, preferably, other beamsrelated to the after the menue? of hinges, to their enf-ls 19 oon- 35.hinge erin beams in the nature of oross beams or struotecl .forarticulation through means of the transorns- Preferably, also, theseveral beams Pllliles l Wtll the hinge bearings 3 on the body areunited with the web portions in planes inter,- of the implement; 3.150,hDllOW CI'OSS beams 01 mediate ofthe planes oi the outer and inner wallstransom 20, 21, extending integrally between of the hollow beams, sothat the inner walls of the hinge arm beams 1B in a manner to develop'l0 atleast the .hinge erm. beams, and preferably any with. the'letter erelatively light but very Strong 40 begin or beams parallel. therewith,while provid- ,flemme for the door; and, preferably also, e ing portionsoi the inner surfsoe of the door, will iol-dille boem 22 .Parallel withthe beams 18 end be related to the web portions as corrugationsintegrallyA intersecting the beams 20, 21, aS a fill'- wliicn will notinterfere with the loading or dis# ther element of reinforced framingand eonvencharge of the implement. iently available as a, housing for a.dipper latch 45 Another object of theinvention is Vto utilize cerbOlt 23and its anti-friction bearings 23a, 23h, tuin of the hollow beams as amounting forthe WhQh bolli it holds ill DOStiOIl t0 Godet with the doorlotoh; to which end, the preferred embodis lellih keeper 24 (as ShOWIl.lll Figures 3 to' 5).

ment of the invention includes an intermediate AS ,further ShOWIl inthese gllreS, the bottom hollow beam parallel with the hinge arm beams,reinforce rim 15 may be strengthened opposite 50 intersecting thetransom beams and providing. bolt 23 by means of gusset or bracket 25.housing for the latch and its heoringsE f As shown in Figures 6 and '7,the inner Walls in the aceomoanying drawings, in Whieh .the 18a .of thehinge erm` beams 18 and the inner preferred embodiment of` .theinvention .is shown Wall .22a of the latch housing beam 22 constitute5.5. by way of i.llu.stn.ltion--v eorrusetions on the inner surface ofthe door and 65 together with inner surfaces of the several websconstitute the inner surface of the door; in other words, the severalweb portions integraily unite with the framing beams 18 and 22 in aplane intermediate of the planes of the inner and outer walls of theseparticular beams= Said web portions, however, constitute the inner walisof the hollow trfansomsy 2Q and 21 in order that there may be notransverse obstruction on the inner surface of the door to retardmovement of the material in dumping.

The hollow framing beam 22, which integrally intersects the transombeams 20, 21A and provides the housing for the latch bolt 23, hasthoseof its s walls which lie on the outer side of the plane of the webportions terminated intermediately of the height of the door; but itsinner wall 22a, which provides a vertical stifening corrugation on theinner surface of the door, continuesupwardly therebeyond, as shown inFigures 2 and/i. Latch bolt. 23 is merely typical of any suitable knownconstructionof device of that kind and Y will, of course, in practicebeequipped in a known manner for voluntary control. I

rAs shown in Figures 3 to 5, the pintle or point of articulation 4 isoiset a substantial distance inwardly fromthe door for the'known purposeof more advantageously disposing of the door in its swinging movements;but according to the present inventiomthe hinge arm beams, togetherwiththeir inner walls which provide the corrugations on the innerVsurface of the door, are deected inwardly from points materially belowthe upper end of the door, which maintains the advantage of the offsetpintle with very much less prominencer of the upper end of the hingearm; and in order to accommodate inwardly deected portieri,l the body ofthe implement to which the door is applied is recessed at 26 (Figures 1and 3) A door embodyingthe structural principle here'- in described anddesigned appropriately for a given capacity of excavating implement, canbe ,y made with approximatelyOU/ less weight of metal than a `door oflike capacity embodying principles of construction relied upon prior tothe present invention.

What is claimed is:

1. In excavating implements, in integral door structure comprising vwebportions and hollow framiner beams; said beams being positioned in saiddoorstructure in hinge arm relation to the door and having their endsconstructed for hinge connection with an implement upon which the dooris to be mounted, said hinge arm beams near their articulating ends, butbelow the upper end of the door, being deectedinwardly beyond the innersurface ofthe door. y, i f

2. 'In excavating implements, an integral door structure vcomprising webportions and hollow framing beams; said beams being positioned in saidstructure to provide hinge arms and transoms; and the beams whichprovide said hinge arms being constructed at their ends for articulationwith the body of an impiement which the door is to serve. n

3..A hinged door foiexcavating implements, comprising hollow framingbeams and web portions merging integrallyr with said beams; said beamsbeing positioned in the rdoor to provide hinge arms therefor and vhavingspaced inner and outer walls; and said web .portions meeting side wallsof the beams in `a plane intermediate of the planes of the inner andouter walls of the beams, whereby the irmer walls kof the beamskconstitute 6. A door asv described in claim 1, which also embodies in'construction a hollow framing beam intermediate of and substantiallyparallel with the hinge armf-beam.

7. A door-as described inclaim 1, which also ,embodies initsconstruction a hollow framing beam intermediate of the hinge armbeams and constructed "to provideY a latch bolt housing for the door.

s. A door as described in daim 1,v wnic isiso i constructed with anintermediate hollow kframing beam substantially parallel with the hinge-arm beams'and having its inner wall forme'das a cor'- rugation4 in theinner surface of the door.

9; A door as describedin claim 1 ,fwhi'chis also constructed with anintermediate hollow framing' beam substantially `parallel with thehingel arm beams and having its inner wail formedas alcorrugation in theinner 'surface ofthe door; the outer wall of said intermediate beamterminating intermediately of the vertical dimension of ther door,withits inner wall being continued beyond said termination as acontinuation ofthe corru-l gation on the inner surfaceof the door.` Y10. A door as described inclaim 3 inwhich the hinge arm beams,togetherwith their innerV lcorrur-v gation-iforming walls, aredeected atpoints be-4 t low the upper end rof'thedoor inwardly beyond the innersurface of the door in determining the location of their points `ofarticulation with an implement upon which the door is to serve.

y1,1. Iny combination, an excavating implementr bodyhaving doorarticulating bearings, and a hinge-:l door therefor comprising hollowframing beams and web portions merging integrally with said beams, thebeams being positionedY in the door structure as hingearms andincludinginner walls positioned. as corrugations in the inner sur-I face'of the ydoor and outer walls rspa-ced therefrom; said hinge arm beamshaving projecting ends eonstructedforarticulation with the implementbody and being deilected 'from' points short of the hinging end of thedoorinwardlf-,f to artcu lating bearings upon said body; and said bodybeing recessed to admit the inwardly rdeilected portions.

12. In excavating implements; an'integral door structure comprising webportions 'and' hollow framing beams, said 'beams being positioned insaid door structure and having their inner walls formedas corrugationson theinner surface 'of f the door, said door structure having integralhinge extensions for hinge connection with the imple-` mentupon whichr.the door is `to bejmounted.

A13.A hinged dipper doorv comprising a body portion, reinorcingfbeamsintegrally cast with said body portion, said' :beams forming hinge armsprojecting beyond said body portion` and said lbody portion', havingreinforcing corrugations formed on the inner surface thereof extendingparallel to saidhinge armbeamsfwhereby said corrugations l permit freedischarger of material kcarried by said door as the door is swung' toopenp'osition with respect to the dipper upon which it is mounted.

14. In an excavating bucket, an integral door structure comprising, webportions and hinge arm beams, said beams being positioned in said doorstructure in hinge arm relation to the door and having their endsconstructed for hinge connection with the bucket upon which the door isto be mounted, the inner walls of said hinge arm beams being formed ascorrugations on the ixmer surface of the door.

15. In an excavating bucket, an integral door structure comprising, webportions and hinge arm beams, said beams being positioned in said doorstructure in hinge arm relation to the door and having their endsconstructed for hinge connection with the bucket upon which the door isto be mounted, the inner walls of said hinge arm beams being formed ascorrugations on the inner lsurface of the door, said corrugationsincreasing in height towards the hinge edge of the door. Y

16. In an excavating bucket, an integral door structure comprising, webportions and hinge arm beams, said beams being positioned in said doorstructure in hinge arm relation to the door and having their endsconstructed for hinge connection with the bucket upon which the door isto be mounted and an intermediate hollow framing beam substantiallyparallel with the hinge arm beams and having its inner wall formed as acorrugation on the inner surface of the door.

17. In an excavating bucket, an integral door structure comprising, webportions and hinge arm beams, said beams being positioned in said doorstructure in hinge arm relation to the door and having their endsconstructed for hinge connection with the bucket upon which the door isto be mounted and an intermediate hollow framing beam substantiallyparallel with the hinge arm beams, having its inner wall formed as acorrugation on the inner surface of the door and its outer wallterminating substantially midway of the door, said inner wall beingcontinued beyond said termination as a continuation of the corrugationon the inner surface of the door.

18. In an excavating bucket, an integral door structure comprising, webportions and hinge arm beams, said beams being positioned in said doorstructure in hinge arm relation to the door and having their endsconstructed for hinge connection with the bucket upon which the door isto be mounted, said hinge arm beams, near their hinge ends but forwardyof the rear edge of the door, being deected inwardly beyond the innersurface of the door.

having door articulating bearings and a hinged door structure thereforcomprising, framing beams and web portions merging integrally with thebeams, the beams being positioned in the door structure `as hinge arms,said hinge arm beams having projecting ends constructed for articulationwith the bearings on the bucket body, said beams being deected frompoints short of the hinge edge of the door inwardly towards thearticulating bearings upon said bucket body and said bucket body beingrecessed to admit the inwardly deected portions of the hinge arm beams.

20. In van excavating bucket an integral door structure comprising, webportions and intersecting hollow framing beams, certain of said beamsbeing positioned in said door structure in hinge arm relation to thedoor and having curved ends extending beyond the web portions of saiddoor for hinge connection with the bucket upon which the door is to bemounted and other of said beams extending transversely with respect tosaid hinge arm beams, tying together said hinge arm beams forreinforcement of said door structure.

21. In combination, an excavating dipper bucket having a bottom openingthrough which material may be dumped, hinge brackets on the back of saidbucket offset from the plane of said opening, a door hingedly mounted onsaid bucket by means of said hinge brackets, said door having integralhinge arms which curve inwardly at their ends with respect to the rearedge of the main body of the door for articulation with said hingebrackets, whereby portions of said curved ends lie Within the bucketwhen the door is in closed position, the back of the bucket havingrecesses to receive said curved ends.

22. An integral dipper door structure adapted to be hingedly mounted onan excavating bucket comprising, a body portion, hollow hinge arm beamsintegral with and reinforcing said body portion and extending beyondsaid body portion to provide curved hinge arm extensions, a hollowframing beam constituting a latch bolt housing integral with said mainbody parallel to but intermediate said hinge arm beams, a pair of hollowtransom beams extending from said latch bolt housing beam and mergingintegrally at their ends with said hinge arm beams, a marginalreinforcing rib extending around the main body of said door and integralgusset portions between said hinge arm beams and the marginal rib, saidgusset portions lying substantially in line with the transom beams forreinforcement of the door structure.

JOSEPH P. MURTAUGH.

19. In combination, an excavating bucket body

